Syntax error

An {{Glossary("exception")}} caused by the incorrect use of a pre-defined {{Glossary("syntax")}}. Syntax errors are detected while compiling or parsing source code.

For example, if you leave off a closing brace (}) when defining a {{Glossary("JavaScript")}} function, you trigger a syntax error. Browser development tools display {{Glossary("JavaScript")}} and {{Glossary("CSS")}} syntax errors in the console.

See also

• Syntax error on Wikipedia
• {{jsxref("SyntaxError")}} JavaScript object